.box{
  flex: 1;
  padding-left: 10px;
  padding-right: 10px;
}
.dirNav{
  height: 40px;
}
.tools{
  height: 40px;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}
.content{
  flex: 1;
}